Our Galaxy and the nearby Andromeda Galaxy (M31) form a bound system, even though the relative velocity vector of M31 is currently not well constrained. Their orbital motion is highly dependent on the initial conditions, but all the reliable scenarios imply a first close approach in the next 3-5 Gyrs. In our study, we simulate this interaction via direct N-body integration, using the HiGPUs code. Our aim is to investigate the dependence of the time of the merger on the physical and dynamical properties of the system. Finally, we study the dynamical evolution of the two Supermassive Black Holes placed in the two galactic centers, with the future aim to achieve a proper resolution to follow their motion until they form a tight binary system.

The collision between the Milky Way and Andromeda and the fate of their Supermassive Black Holes / Schiavi, R.; Capuzzo-Dolcetta, R.; Arca Sedda, M.; Spera, M.. - 14:351(2019), pp. 161-164. ((Intervento presentato al convegno Symposium S351: Star Clusters: From the Milky Way to the Early Universe , May 2019 [10.1017/S1743921319007439].

The collision between the Milky Way and Andromeda and the fate of their Supermassive Black Holes

Spera M.
2019

Abstract

Our Galaxy and the nearby Andromeda Galaxy (M31) form a bound system, even though the relative velocity vector of M31 is currently not well constrained. Their orbital motion is highly dependent on the initial conditions, but all the reliable scenarios imply a first close approach in the next 3-5 Gyrs. In our study, we simulate this interaction via direct N-body integration, using the HiGPUs code. Our aim is to investigate the dependence of the time of the merger on the physical and dynamical properties of the system. Finally, we study the dynamical evolution of the two Supermassive Black Holes placed in the two galactic centers, with the future aim to achieve a proper resolution to follow their motion until they form a tight binary system.
Galaxy evolution and feedback across different environments
14
351
161
164
https://arxiv.org/abs/1908.07278
Cambridge University Press
Schiavi, R.; Capuzzo-Dolcetta, R.; Arca Sedda, M.; Spera, M.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11767/122362
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